Here's Five (and Variety's reasoning)!
17. The Good Dinosaur - poor animation + one-dimensional characters = "eh" movie
12. Ratatouille - Variety seems to think it's more conceptually ingenious rather than ingenious story
8. Cars - Calls it "Enormously engaging" and most kid-friendly Pixar movie
4. Inside Out - Actually inventive and poignant story about growing up
2. The Incredibles - Superhero movie + family drama + screwball comedy = Pixar classic